Silicone defoamers


In industrial production, bubbles are everywhere: machine grooves of all kinds of processing fluids; various industrial cleaning pools; all kinds of industrial and agricultural products and preparations; water treatment and other aspects of petrochemical production.


Foam brings many problems to industrial production: in order to prevent bubbles from overflowing, the feeding coefficient is forced to reduce 30%~ 50%; the spillover causes the waste of raw materials; the bubble occupies space, affects the reaction speed, and the production cycle is forced to prolong; the foam will affect the quality of products, such as coatings and plastic products; the emergence of foam will have an impact on the stability of industrial production, resulting in fluctuations in operation and quality. Instable.


The most direct solution to the bubble problem is the use of defoamer.


Defoamers should possess the following properties:


1. Strong defoaming power and less dosage;


2. It does not affect the basic nature of the system after joining.


3. Low surface tension;


4. Good balance with surface.


5. Good diffusion and permeability.


6. Good heat resistance, acid resistance and alkali resistance.


7. Chemical stability and strong oxidation resistance.


8. Gas solubility and good permeability.


9. Low solubility in foaming solution.


10. High physiological safety.


Conversion from organosilicon